Table 3 Least-squares regression analysis, with one sample removed from the analyses due to it having a notably greater porosity (40%). The Pearson’s Correlation Coefficient (r) for each measurement comparison is shown (n = 19).

From: Computed tomography porosity and spherical indentation for determining cortical bone millimetre-scale mechanical properties

 

Density

CT Porosity

RUS E3 Modulus

Bulk Wave US E33

Indentation Modulus

Compression Modulus

Ultimate Compressive Strength

Bone Mineral Density Ashing

Density

        

CT Porosity

−0.91**

       

RUS E3 Modulus

0.74**

−0.72**

      

Bulk Wave US E33

0.78**

−0.70**

0.79**

     

Indentation Modulus

0.28

−0.32

0.06

0.19

    

Compression Modulus

0.48*

−0.57*

0.35

0.47*

0.41

   

Ultimate Compressive Strength

0.68**

−0.75**

0.64**

0.66**

0.35

0.84**

  

Bone Mineral Density Ashing

0.87**

−0.74**

0.57*

0.61**

0.17

0.27

0.47*

 
  1. *Indicates p < 0.05, **indicates p < 0.01. CT = computed tomography; RUS E3 Modulus = the apparent elastic modulus measured by resonant ultrasound spectroscopy in the longitudinal (3) direction; Bulk Wave US E33 = the apparent elastic modulus in the longitudinal direction measured by bulk-wave ultrasound.
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